Well what do I want to spray?

recycled furniture, some that would be very rustic and rawish timber, other pieces would be ex commercial dining tables n chairs.
raw MDF
raw ply and other common timbers.

there is an old airless Wagner that I found years ago and have never got around to trying

types of paints iD like to use.

std commercial acrylic tins, lacquers, ????

where do I start?